346 PROCEEDINGS OF THE NATIONAL MUSEUM vol. io9 



one halfway between crossvein and poststigmatic pale spot, the other 

 halfway between the poststigmatic spot and the distal pale spot in 

 cell R.5; apices of veins Mi, Mj, M3+4 and Cui pale a considerable 

 distance from wing margin ; distal pale spot in cell Mi lying far removed 

 from wing margin; pale spot present straddling middle of vein M2; 

 distal pale spot in cell M2 small and not reaching wing margin ; pale 

 spot in cell M4 touching vein M3+4 and continued along posterior 

 margin of this vein to base of cell M4; anal cell with one pale spot 

 in distal portion; a pale spot present in cell M2 behind medial fork 

 and another present in front of mediocubital fork. Macrotrichia 

 sparse and in rows on distal third of wing and a few in anal cell; costa 

 extending to 0.61 (0.59-0.61, n=10) of distance to wing tip. Halter 

 pale. 



Abdomen. — Dark brown. Spermathecae two, p3^iform, subequal, 

 measuring 0.065 by 0.041 and 0.058 by 0.036 mm., the bases of the 

 ducts sclerotized a considerable distance. 



Male genitalia. Ninth sternum with broad, deep, caudomedian 

 excavation; ninth tergum long and tapered, with short, triangular 

 apicolateral processes. Basistyle with ventral root long, curved and 

 slender, with a small caudal hook, dorsal root nearh^ as long; dististyle 

 slender and slightly curved. Aedeagus with basal arch broad and 

 pointed, basal arms slender and curved, each bearing a bladelike 

 process on posterior margin slightly caudad of midlength; distal 

 portion slender and simple with serrated tip. Parameres each with 

 large basal knob, stem slender and nearly straight, ventral lobe lack- 

 ing, distal portion abruptly bent ventrad, and bearing a fringe of 

 4-6 sharp spines and a strong, bent distal spine. 



Distribution. Venezuela; Honduras (Lancetilla) ; Panama. 



Panama records: 



BocAS DEL ToRO PROVINCE: Almirante. 



Canal Zone: Fort San Lorenzo, Fort Sherman, Loma Boracho, Madden Dam, 



Mojinga Swamp. 

 CniRiQuf Province: Concepci6n. 

 Cocl6 Province: Ant6n, Aguadulce, Cocl6, El Valle, Penonom^, Pocri, Puerto 



Farall6n, Rfo Hato. 

 Col6n Province: Espino, Pina. 

 Dari6n Province: El Real, Garachin6. 

 Herrera Province: Ocu, Pes6, Puerto Chitr6. 

 Los Santos Province: Guarar^, La Palma, Las Cruces, Las Lajas, Las Tablas 



(type locality of vargasi), Los Santos, Macaracas, Puerto Mensabe, Quemado, 



San Jos6. 

 Panama Province: Bayano, Naranjal. 

 Veraguas Province: Rfo Santa Marfa, Santiago. 



Discussion: C. iriartei is closely related to C. haueri Hoffman 

 from the United States, C. hlantoni Vargas and Wirth from Mexico, 

 and C. evansi, new species, from Panama. C. baueri differs in having 



